Shaft-lubricator



(No Model.)

B. DAWSON.

SHAFT LUBRIGATOR.

No. 439,123. Patented Oct. 28, 1890.

UNITED STATES PATENT OFFICE.

EDWARD DAWSON, OF TERRE I-IAUTE, INDIANA.

SHAFT-LUBRICATOR.

SPECIFICATION forming part of Letters Patent No. 439,123, dated October 28, 1890.

Application filed January 23, 1890.

To all whont it ntay concern.-

Be it known that I, EDWARD DAW'SON, a citizen of the United States, residing at Terre IiIaute, in the county of Vigo and State of Indiana, have invented certain new and useful Improvements in Shaft-Lubricators; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to bearings for shafts which are provided with means for lubricating the shaft; and it consists in the novel construction and combination of the parts hereinafter fully described and claimed.

In the drawings, Figure 1 is a vertical longitudinal section through a stationary shaftbearing. Fig. 2 is a cross-section through the same on line a: min Fig. 1. Fig. 3 is a plan view from above of the lower part of the bearing.

A is the shaft-bearing, which may be supported in any approved form of bearingbracket bylscrews, which enter the recesses a in the usual manner.

13 is the shaft.

The hearing A is provided with semicircular liners b, of Babbitt or other similar antifriction metal. Three lugs b are cast upon each liner 1) and engage with corresponding recesses in the bearing. One of these lugs is situated in the middle at the rear of the bearing and the other two at the front upon each side of the middle. These lugs permit the liner to be lifted out, and their number and position prevents the liner from being replaced in any but its correct position. These lugs also prevent the liner from revolving with the shaft when the shaft is in position and keep the liner from moving endwise. A hole 0 is formed in the metal under the shaft leading into the chamber in the bearing underneath it. Longitudinal openended grooves c are formed in the meeting edges of the liners, the use of which will be more fully described hereinafter.

D is an oil chamber extending the full length of the bearing and having its bottom portions (1 inclined upwardly from the deepest part, which comes under the center of the Serial No. 337,864:- (No model.)

bearing to its shallowest parts, which come at the ends of the bearing.

E are annular chambers formed in the metal at the ends of the bearing and which communicate with the ends of the chamber D. The holes 6 in the ends c of the chambers E are larger than the shaft, so that they do not touch it, and hence do not require to be lubricated.

F is a channel in the front of the bearing between the two front lugs 12. The channel F projects in front of the line of the upper part of the bearing, so that oil may be poured down it to fill the oil-chamber.

G is absorbent cotton placed within the chamber D. This cotton projects through the hole 0 and bears against the shaft B. The oil is absorbed by the cotton, and is applied constantly to the shaft. The surplus oil upon the shaft. is scraped off by the edges of the liners and runs along the grooves 0 into the annular chambers E. The oil runs down the inclined portions (Z, and is reabsorbed by the cotton, which strains out the dirt and impurities collected by the oil in its passage through the bearing, so that the same oil is constantly circulated and is purified between each application to the shaft.

That I claim is 1. The combination, with a shaft-bearing box formed in two halves and provided with the longitudinal oil-chamber D upon one side and the annular chambers at its ends, of the semicircular liners, each provided with lugs fitting into corresponding recesses in the bearing-box and with the longitudinal openended grooves 0, one of the liners being further provided with the hole 0, opposite the said longitudinal oil-chamber and through which a plug of absorbent material may project to touch the shaft, whereby a continuous circulation of oil may be maintained while the shaft is in motion, substantially as set forth.

2. The combination, with a shaft-bearing box formed in two halves and provided with the longitudinal oil-chamberD upon one side and the annular chambers at the ends of the bearing communicating with the said oilchamber, of the semicircular liners, each provided with lugs upon their meeting edges fitting into corresponding recesses in the bear- In testimony whereof Iafiix my signature in ing-box, one of the said liners being further presence of two Witnesses. provided with the hole a opposite the said longitudinal oil-chamber and through which ED WARD DAWSON. 5 a plug of absorbent material may project to Witnesses:

touch the shaft, substantially as and for the S. W. DIETRICH,

purpose set forth. CHARLES RAPP. 

